Invalid-chair.



F. S. GUERBER.

INVALID CHAIR.

APPLICATION FILED IUNE29. m4.

Patented Dec. 3, 1918.

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F. S. GUERBER.

INVALID CHVAIR. APPLICATION FILED JUNE 29 Patented Dec. 3, 1918.

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F. S. GUERBER.

INVALID CHAIR.

APPLICATION FILED JUNE 29.1914.

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Patented Deck- 3 191s.

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Application filed lune 2a, 1914,. Serial 1%. 847,862.

an invalid chair which shall be economical to make, easy to'push about, comfortable for the occupant, of light and strong construction, and which shall be adjustable in height yet firmly supported as to both vertical load and horizontal sway and protected against overturning. The chair hasca unit under-frame of special form, to whichare secured a main axle for a pair of carrying wheels disposed below and Well forward of the chair back, a pilot wheel, anda pair of runners, and between which and the chair body are vertically adjustable connections located at the axle, over the pilot wheel and at the forward ends of the runners, respec tively. r 1 In the drawings: I Figure 1 is a sectional view of an invalid chair embodying my improvement.

Fig. 2 is aplan view, the section being taken on line 2-2 in Fig. 1. l n 3 Fig. 3 is an enlarged front view, the: upper part of the chair being broken away.

Fig. 4 is an enlarged sectional plan view of the horizontal frame, the section being taken on a line 44 in Fig. 1, some of the members being omitted.

Fig. 5 is an enlarged sectional plan view of a portion of the horizontal frame andi connected runner. n i

As herein illustrated, my improved chair consists of a body A, consistingyof seat .1, sides 2 and a tiltable back 3.. To produce a cheap body, I secure thesides 2to the seat 1 by straps 41, Fig. 2, which in turn are securedto the seat 1. The seat 1. is supported by a substantially flat horizontal unit under, frame 5, Fig. 4, consisting of axle hubs 6, a pilot wheel axle hub 7, arms or ribs 8 converging from the axle hub to the pilot wheel, axle hub and arms or ribs 9 diverging from the ribs 8. The outer end of each arm 9 carries a tubular hub 10 to receive the upturned member 11 of a runner or guard 12. The rear member 13 of each guard 12 is se cured. to a bracket 14: 01. each axle hub c.

Specification of Letters Patent. Patented Dec. 3, 1912.

Each bracket ghas also secured thereto i brace, 15 whichvsupports the body ofthe chairby being secured to theseat 1 by screws 16. To the outer end ofeach brace 15 I secure a clamp 17 whichrotatably supports the back 3 of the body of the chair.

,To brace the back 3 of the body I employ braces 18 secured at one end to the bottom 1 of the chair, the opposite end passing through the backand provided with threads to receive a tubular nut 19. To alter the. inclination of the back 3 the nuts 19 will be backed off, presuming. that the baclris at its highest point of inclination in Fig. 1,

which will permit thebackto be swung upon its pivotal connection at the brackets 17 and inclined. rearwardly the. desired amount. When the. nuts 19' are removed the back 3 can be moved to a position line withlthe, seat 1, or horizontal. The front: of the body A isprovidedwith tubular posts 20 secured a to the seat 1 at 20*, which are fitted into the tubular member 11 of the: guards 12, and which are adapted for vertical movement or adjustment therein. Each guard member 11 is provided with a plurality ofopenings or passages 21, adapted to receive a pin 22, which alsopasses through an opening, not shown, in the posts 20. The front of the chair. can be raised or lowered by altering the position of the posts 20 in the guard members 11. The posts 20 arepreferably located somewhat forward of the chair seat, and their, upper portions l'Z-are bentrearward and inward and their ends secured b0" neath the seat, Each brace 15 is also pm vided with openings Fig. 3; to adiust the heightof the chair the bolts 24 will be removed and the braces 15 adjusted on the brackets, 14:. i To facilitate the rolling of the chair forward, rearward, or when turning, T prov de the hub 7, ofthe horizontal frame 5 with afrotatablej carriage 25 carrying a yoke 26 for a pilot wheel 27. The carriage y 25' is tubular and a post 28. passes through the same. The post 28 enters a socket 29 in the seat 1 and is provided with a plurality. of openings 30 through any one of whicha pin 31 can pass. The weight of the person in the chair 1s imposed upon. the posti28,. thence to the pin 31.; hub 7 and finally wheel.

n f i 27. The height of the chair at the front I can be altered by adjusting the post 28 in the hub 7. The removable pin 3],. permits the adjustment of the said post, a

in i

- carrying wheels 57, the same beinglocated' so having vertically adjustable connection with The chair is preferably provided with a foot rest 82, which at its inner end. is provided with cleats 33, which rest upon the guards 12 (see Fig. 4). The foot rest is held in an inclined position by open link chains 34, one end of each chain being attached to an eye in the foot rest; the opposite end of the chain engaging a hook 36 in the chair seat 1. To increase the degree of inclination of the foot rest the chain is taken up by causing an intermediate link to engage the hook 36. The foot rest can be entirelyremoved from the chair by disengaging the chains from the'hooks 36 and pulling the foot rest outwardly.

The chair is also preferably provided with a table 37 pivotally supportedto posts 38, and adjustable braces 39. consist, in this instance,

of two telescoping members 42 and 43 adjustably secured together by pins 44, which pass through one of a number of openings 45 in the postmemhere 42 and through shown,

in the post member 48*. The lower end of each member 45 "of the table posts. 38 carries. a pin 49, Fig. l, which passes through openings 50 in the frame arms 9.

The chair is provided With an axle 56 well forward of the back of the chair body, so as to be approximatelyibeneath the center of gravity.

' I claim as my invention:

1. An invalid chair comprising, in combination, a chair body, having a main axle bearingfor I carrying. wheels below and forward of the back of the chair, a, pilot wheel and runners also secured to said unit under-frame, a pair of rear supports for the chair body the under-frame adjacent the main axle bearing, another vertically adjustable support over the pilot wheel, and a pairof side supports, also vertically adjustable, between the chair body and the forward corner portions of the understructure.

2. An invalid chair comprising, in combination, a chair body, an underframe carrying the-same and comprising an axle housing below and well forward of the back of thechair body and frame members extending forward from said axle housing and Copies of this patent may be obtained. for live cents each; by addressing the pilot,

The posts 38 an aliningopening', not

a unit under-frame a pair of having vertical sockets, a pair of main wheels on an axle in said axle housing, a wheel mounted on a central one of said sockets, and runners projecting rearward of the main wheels and having upturned forward portions received in forward corner sockets.

3. An invalid chair comprising a chair body, an under-frame having axle hubs located below and well forward of the back of the chair body, and comprising converging arms extending thence forward and bearing a vertical hub or socket, and diverging arms extending forward from the converging arms and bearing forward corner hubs'or vertical sockets, in combination with a pilot wheel, runners havin rearward extensions, and forward chair hody supports, which are connected with said sockets.

4. In combination with a chair body, a supporting frame, said frame consisting of a plurality of arms, the free end of each of said arms being provided with a hub, two of said hubs beingadapted to receive an axle, the other of said hubs being adapted to receive a supporting element for the chair body 5. In combination with a chair body, a supporting frame, said frame consistin of a plurality of arms, the free end of one 1 of said arms being provided with a hub, two of said hubs being adapted to receive an axle, the other of said hubs being adapted to receive a supporting element for the chair body, and means carried by the frame adapted to support a pilot wheel.

6. In combination with a chair body, a supporting frame, wheels carried by said rame, ad ustable posts secured to said chair and engaging said frame, a hollow trunnion rotatably supported by said frame, a pivot wheel carried by said trunnion, and an ad.- just able post passing through said trunnion, andat the upper end thereof, engaging the seat of said chair body.

Signed at New York city, New York, this 15th day of June, one thousand nine hundred and fourteen.

FREDERICK S. GUERBER. lVitnesse s:

MABEL Drr'rnN nonrnn, LEOPOLD BALBACH.

Commissioner of Patents.

Washington, D1 0." 

